Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Vulnerability of a guyed lightweight steel tower to extreme lateral loads
Submission Author:
Crystian Daniel Paz , PR , Brazil
Co-Authors:
Crystian Daniel Paz, Rúbia Bosse, Joao Lucas Salvador de Araujo, Gustavo de Miranda Saleme Gidrão
Presenter: Crystian Daniel Paz
doi://10.26678/ABCM.COBEM2023.COB2023-1512
Abstract
Lightweight structures exposed to strong earthquakes can experience significant displacements, vibrations, and plastic deformation accumulation, resulting in failure of critical components of the structure. To address the issues affecting the service life and ultimate limit state of these structures, this study proposes an initial evaluation of the vulnerability of tall steel structures to extreme lateral loads. The study proposes the use of a guyed metallic power transmission tower modeled in Abaqus to perform a Pushover analysis. Based on the pushover results, it is possible to estimate the damage limits for the given tower, addressing the significant gap in current standards and recommendations related to these limit states. Pushover analysis is utilized to identify failure mechanisms by analyzing the nonlinear behavior in the nodes of the elements, employing the perfect plasticity constitutive law to model steel properties. The study's results unveil the maximum strength of the tower in the Pushover analysis, providing insight into the structure's response to potential earthquakes. Additionally, the pushover analysis aids in defining the damage limits that can be employed when assessing the structural vulnerability to extreme seismic loads.
Keywords
Guyed Tower, dynamic analysis, Pushover
